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问题: 英语高考题

I didn’t know when she ________, but if she ______ I ______ you know.
A. came ;would come ;would let
B. came; came ; let
C. would come; came; let
D. would come; came; would let

解答:

选D

我不知道她会什么时候来,但如果她来了,我会告诉你。

第一个空,宾语从句,过去将来时--她将什么时候来--would come

第二个空,条件从句,要用一般过去时表达过去将来时。所以用came
第三个空,因为他是主句,过去将来时,用would let。

but连接了2个带有从句的句子,前一个带了宾语从句,后一个带着条件从句。